Latch



UNITED STATES PATENT I OEELCE.

HARMON C. PIESTER, OF PETOSKEY, MICHIGAN.

LATcH.

SPECIFICATION forming part of Letters Patent No. 508,973, dated NovemberV:21, 1893.

Application iilecl May 31,1893.

.To all whom it may concern.-

Be it known that I, HARMON C. PIESTER, a citizen of the United States,residing at Petoskey, in the county of Emmet and State of Michigan, haveinvented a new and useful Door-Bolt., of which the following is aspecication.

This invention relates to door bolts, and it has for its object toprovide an improved sliding door bolt which is especially adapted foruse in connection with warped or sprung doors, so as to provide meansfor securely locking doors which have become warped or sprung and onwhich ordinary locking bolts could not be used.

To this end the main and primary objectof the presentinven tion istoprovideanimproved locking bolt not only capable of use on doors but asequally available for employment on swinging objects, windows, &c.,whereby such objects can be locked and tightened perfectly, even thoughwarped or sprung out of their proper positions.

With these and other objectsin view which will readily appear as thenature of the invention is better understood, the same consists in thenovel construction, combination and arrangement of parts hereinaftermore fully described, illustrated and claimed.

In the accompanying drawingsz-Figure l isa front view of a portion of adoor and its jamb or casing with rny improved locking bolt applied. Fig.2 is an enlarged horizontal sectional view of the construction disclosedin Fig. 1, `directly above the locking device, which shows in elevation.Fig. 3 is an enn larged central horizontal sectional view'of the lockingbolt applied for use and shown aslocking the door in position in itsjamb or casing. Fig. 4 is a detail in perspective of the sliding lockingbolt. Fig. 5 is a similar View of the cam lever handle.

Referring to the accompanying'drawings,l

- A represents an ordinary swinging Vdoor having in its swinging edgethe lock mortise B, in which is inserted the elongated tubular lockcasing C. The elongated tubular lock casing C, is open at its outer endat the outer edgeof. the door, to provide for the ejection of thesliding bolt contained therein, and is further provided at one side nearits inner end with the opening D, which communicates Serial Nc. 476,109.(No model.)

point in close proximity to the rear sides of such casing, and saidcasing is designed to inclose the sliding locking and tightening boltH.The sliding locking bolt H, is mounted to move longitudinally within thecasing, and also at an angle, and is provided at its outer end with thelocking. tongue I, upon opposite sides of which project the guide pinsJ, adapted to work in the inclined `slots Gr, so that as the locking andtightening bolt H, is ejected from the open outer end of the casing, thelocking end or tongue of said bolt moves at an angle from the reai1 sideof the casing to the front side, and is adapted to be projected into thekeeper K, secured in the shoulder of the door jamb or casing L,andprovided with a strike flange M, against which one side of thelocking bolt bears, and servesto throw the door Vtightly into the janibor casing, even when -warped or ,sprung as will be readily apparent.

The extreme inner end of the angularly moving sliding bolt is providedat oneside with the rounded bearing notch N, which communica-teswith theend opening D, of the casing, and back of the said notched end of thesliding bolt is arranged the outwardly pressing leaf spring O, whichholds the notch of the bolt in working engagement with the cam of thelever handle P. The lever handle P, is journaled between the pivot earsQ, of the lever plate q, attached to the outsid e of the door A, andfurther provided with the inwardly extending lugs g', fitting notchesq2, in the edges of the opening D, so as to Iirmly hold the lever platein a position in alignment with the slot E, of the door and the openingD, in the inner end of the ptubular casing.

The inner end of the lever handle P, is provided with kan off-standingrounded cam lug R, which loosely fits the rounded bearing notch N, ofthe sliding locking bolt,`so that as the said lever handle is movedlaterally, the said locking bolt will be slid in and out of its casing.

Now from the foregoing it is thought that IOO the operation and manyadvantages of the herein described locking device will be readilyapparent to those skilled in the art. As clearly shown in Fig. 3 of thedrawings, in case the door is sprung or Warped, the locking end of thesliding bolt is only partially projected when it first comes inengagement with the strike flange of the keeper, and before the door isentirely shut. By now continuing to press on the lever handle and toforce the bolt entirely out of the casing, the drawing pressure, causedby the bolt` moving at an angle, will serve to throw the door tightlyinto the jamb or casing. When the bolt is Withdrawn it is limited in itsinward movement by the transverse stop pin S, arranged to be engaged bythe shoulder s, at 011e side of the bolt.

It will be apparent to those skilled in the art that the hereindescribed bolt maybe attached to a Window or other swinging object, orto the outside of the door instead of mortised therein, and stillsubserve the same important use, and I will have it understood thatchanges in the form, proportion and the minor details of constructionmay be resorted to Without departing from the principle or sacrificingany of the advantages of this invention.

Having thus described the invention,what is claimed, and desired to besecured by Letters Patent, is-

1. In a door bolt, the inclosing casing, a sliding bolt mounted to slidelongitudinally within said casing at an angle from side to side thereofand having a notch at its inner end, an adjacent lever-handle having aprojection loosely turning in the notch in said bolt, and a suitablyarranged spring to hold the notch end of the bolt in engagement withsaid projection, substantially as set forth.

2. In a lock of the class described,an elongated tubular casing, asliding locking and tightening bolt mounted to move at an angle andlongitudinally in the casing, an operating lever handle mountedadjacentto the lock casing and engaging said sliding bolt, and a clinedslots of the casing, a lever handle loosely connected with said slidingbolt, and a keeper having a strike ange adapted to receive the tongueend of the sliding locking bolt, substantially as set forth.

5. In a lock, atubularc'asing, asliding locking and tightening boltmounted to move at an angle and longitudinally therein and provided Witha rounded bearing notch at its inner end, and an operating lever handlepivoted adjacent to the lock casing and having an off-standing roundedcam lug loosely fitted in said rounded bearing notch, substantially asset forth.

6. In a lock, an elongated tubular casing having inclined slots at oneend, a sliding bolt mounted within said casing and having near one endguide pins moving in said slots and at its other end a rounded bearingnotch, a lever plate attached to a suitable point of attachment adjacentto the lock casing,a lever handle pivoted in said plate and having atits inner end an off-standing rounded cam lug loosely iitting therounded bearing notch of the bolt, and an outwardlypressing leaf springarranged in rear of the notched end of said bolt, substantially as setforth.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in the presence of two witnesses.

HARMON C. PIESTER.

Witnesses:

COURTLIN C. GAToH, WILLIAM H. PARKER.

